US Conducted 1054 Nuclear Tests
Between 16 July 1945 and 23 September 1992 the United States of America conducted (by official count) 1054 nuclear tests
http://nuclearweaponarchive.org/Usa/Tests/
That means an average of about 22 per year. And now the US wants to represent the world outraged because the DPRK conducted one lame test.